Today I was in a shop and overheard a song I really liked, so made a note of some of the lyrics on my phone to google when I got home. However, the sound quality in the shop wasn't great and I only managed to grab fragments. Google hasn't thrown up any solutions so maybe you guys can! It's an up-tempo love song with harmonies on the chorus (if I heard correctly above the din), and it just had a really pretty melody. Definately a female vocalist, I'd say. The fragments were:

"Each time you look at me"
"I wonder if you know how much I like you" [I think this was leading into the chorus]
"And I wish I could..."
"All my life"

Ha! Not much to go on I know, but please scratch you're heads - it's killing me!

Cheers! :-D